Richard Lenski oversees the count of micorganisms growing in a Petri dish that was used in a study of evolution.
Credit: Courtesy of Michigan State University
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Richard Lenski of Michigan State University explains how some evolutionary results buck the conventional wisdom.
Credit: National Science Foundation/Michigan State University
Richard Lenski's findings are described in the March 18, 2011 issue of the journal Science.
Credit: Copyright AAAS 2011
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